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CoStar Group

903 hedge funds and large institutions have $34.9B invested in CoStar Group in 2025 Q3 according to their latest regulatory filings, with 108 funds opening new positions, 361 increasing their positions, 314 reducing their positions, and 63 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more first-time investments, than exits

New positions opened: | Existing positions closed:

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more funds holding

Funds holding:

2% more capital invested

Capital invested by funds: $34.2B → $34.9B (+$698M)

3.07% less ownership

Funds ownership: 100.7%97.63% (-3.1%)

4% less funds holding in top 10

Funds holding in top 10: 2625 (-1)

Holders
903
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
25
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$199M
Puts
$81.5M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
701
$181K
702
$177K
703
$174K
704
$160K
705
$157K
706
$153K
707
$149K
708
$148K
709
$148K
710
$141K
711
$134K
712
$134K
713
$125K
714
$123K
715
$121K
716
$110K
717
$109K
718
$107K
719
$106K
720
$98.1K
721
$92.6K
722
$90.2K
723
$89.5K
724
$87.5K
725
$86K